Roll wrapping machine



March 8, 1938. P. D. PARSONS ROLL WRAPPING MACHINE Filed March 20, 19351'7 Sheets-Sheet l w.. in...

March 8, 1938. p. D PARSONS 2,110,814

' ROLL WRAPPING MACHINE Filed March 20, 1935 17 Sheets-Sheet 2 March 8,1938. P. D. PARSONS ROLL WRAPPING MACHINE 17 Sheets-Sheet 3 Filed March20. 1955 Mgg@ March 8, 1938. P. D. PARSONS ROLL WRAPPING MACHINE 17sheetssheet 4 Filed vMarch 20, 1935 www@ March 8, 1938. P. D. PARSONSROLL WRAPPING MACHINE Filed March 20. 1955 1'7 Sheets-Sheet 5 March s,193s. `P D, PARSONS 2,110,814

I ROLL WRAPPING MACHINE Filed March 20. 1935 17 Sheets-Sheet 6 March 8,1938. P. D. PARSONS ROLL WRAPPING MACHINE Filed March 20.

1935 17 Sheets-Sheet 7 March 8, 1938. P. D PARsoNs ROLL WRAPPING MACH-INE Filed March 20. 1935 17 Sheets-Sheet 8 man nel Mmh s, 193s.

P. D. PARSONS ROLL WRAPPING MACHINE Filed March 20. 1955 17 Sheets-Sheet9 March 8, 1938. i P. D. PARSONS 2,110,814

ROLL WHAPPING MACHINE Filed March 20. 1935 1'7 Sheets-Sheet 10 y1/imag@5 March 8, 1938. y P.D. PARSONS ROLL WRAPPING MACHINE Filed March 20,1935 17 Sheets-Sheet l1 d 5pm@ March 8, 1938. P. D. PARSONS ROLLWRAPPING MACHINE Filed March 20K 1935 17 Sheets-Sheet 12 March 8, 1938.

P. D. PARSONS 2,110,814

ROLL WRAPFING MACHINE Filed March 20, 1955 1'7 Sheets-Sheet l5 l IIIIIINH I i v @Peruana Matth 8, 1938,. P, D PARSONS 4 2,110,814

ROLL WRAPPING MACHINE Filed MaICh 20. 1955 17 SheeLS-Sheekl 14 March 8,19.38. P. D. PARSONS ROLL WRAPPING MACHINE Filed March 20, 1955 17Sheets-Sheet l5 March 8, 1938. P D PARSONS 2,110,814

ROLL WRAPPING MACHINE Filed March 20, 1955 17 Sheets-Sheet 16.

March 8, 1938. P. D. PARso-Ns 2,110,814

ROLL WRAPPING MACHINE Filed 'March 20. 1955 17 Sheets-Sheet 1'7 I I I II I l l I I rau. X75/1050 IP/r/o/yl/ ova/HDL 5.

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,geom/ey Maz/MEN I I anc/rse. rea/sra Patented Mar. 8, 1938 UNITED 1STATES `non. WRAPPING Philip D. Parsons', SwarthmoraPa., assigner to'Scott Paper Company, Chester, Pa.. a corporation of PennsylvaniaAppui-,ation Maren zo, 1935, sei-iai No. 12,075

12 Claims.

This invention relates primarily to improvements in machines forwrapping toilet paper and like rolls.

In United States Patent No. 2,005,846 I have disclosed a machine forapplying wrappers to rolls without the use of pick-up" glue applied tothe roll itself, and the principal object of the present invention is toprovide as an adjunct of this machine improved mechanism for neatly andsecurely folding the applied wrappers against the ends of the roll, andto subsequently apply to the folded ends of the wrappers gummed labelsfor retaining the folds in position and for providing a substantiallyair-sealed package.

The mechanism forming the subject of the present invention isillustrated in the attached drawings, in which:

Figure 1 is a side elevational view of a machine made in accordance withmy invention;

Fig. 2 is a transverse sectional view on the line 22, Fig. 1;

Fig. 3 is a diagrammatic showing of a portion of the mechanism;

Fig. 4 is an end elevation and partial sectional Fig. s is a viewsimilar to Fig. '1 illustratingK the elements of one of the. formingheads in another position of adjustment;

Fig. 9 is a face view of one of the forming heads as viewed from theline 9-9,`Fig. 8;

Fig. 10 is a transverse sectional view on the line lil-N, Fig. 8;

Fig. 11 is an enlar`ged fragmentary sectional view illustrating detailsof the folding heads;

Fig. l2 is a view similar t0 Fig. l11 showing the elements in anotherposition of adjustment;

Fig. 13 is a view in perspective of an\ element of the folding head; 1

Fig. 14 is a longitudinal section on the line H-M, Fig. 2; -l 1' v Fig.15 is an enlarged fragmentary view showing a dtail of the labelfapplyingmechanism;`

Fig. 16 is a sectional view on-the line IIB-IB".

F1g .15;; v

Fig. 17 is a `framentary end elevationalviewof a portion of themechanism shown in Fig. 14;

Fig. 18 is a front elevational view of the mechanism shown in Flg. 17;,t

through oney (c1. soa-z) Fig. 19 is an end elevation and partialsectional view of the label-feedingv mechanism;

Fig. 20. is a longitudinal sectional view on line 2li- 20, Fig. 19; Fig.20a is a face view of one of the elements shown in Fig. 20; i Fig. 21 isa transverse` line 2i-2i, Fig. 1;

fue

1 tional view onv the Fig. 22 is a diagrammatic viewshowing a detail loof the drive mechanism;

Fig. 23 is a section on the. line 23--23, Fig. 21;

Fig. 24 is a sectional fview on the line 24, 2l, Fig. 23;

Fig. 2 5 is a fragmentary kview showing a detail of the, mechanismillustrated in Fig. 23;

Figs. 26 to 31, inclusive, are diagrammatic views illustrating the modeof operation and relation between the various parts of the machineduring a complete cycle of operations; v

Figs. '26a to 31a, inclusive, illustrate the roll package in the various.progressive stages corresponding to the operations illustrated in Figs.

26 to 31, inclusive. and

Fig. 32 is a graphic illustration, of the various movements of themechanism. f

The function and various operations of the machine will be more readilyunderstood by rei'- erence first-to Figs. 5, 26a to 28a, inclusive, and

Sla. The rolls I are fed to the machine on an endless .conveyer 2, saidrolls before being de.

`erations which complete .the package. t

In the first of these operations as shown at A. in Fig. 5, theprojectingends of the wrapper Stare turned inwardly 'against the. at ends :of `theroll I in such manner, see Fig. 27a, as to producea series of outwardlyprojecting radial tucks 5, these tucks being uniformlydistributed aroundthe Aaxis of thefroil.` l

Inthe nextoperation and as shown at -B4", Fig. 5, the tucks arefolded inuniformly overlapped relation against the end surfaceof the roll,

see also Fig. 28a.

In a subsequent operation fC in Fig. 5 and in Fig. 31a, a label 5 ofsuitable size and form is adhesively secured to the ends of the package,said labels overlying the attened. .tucks 5 and forming with the wrapper3 a substantially sealed envelope for the roll.

Subsequent to this operation and as illustrated at D, Fig. 5, thecompleted package is discharged from the rotary head 4 into a receivingchute 1.

As shown in Figs. l, 2 and 3, power is applied to the rotary head 4through a shaft 8, this shaft being connected to a vertical stub shaft 9through bevel gears II and I2. The vertical shaft 9 is v veyer 2, andthese gripping devices in the present instance are six in number, seeFig. 5, and are uniformly distributed around the circumference of theintermediate section |9. 'Ihe rotary head 4 also comprises twoside'sections 2| and 22,

see Fig. 2, each of which carries a plurality of forming heads 23 whichcorrespond in number to the said gripping devices and are locatedrespectively in alignment with the latter.

L Each of said gripping devices'compris'es a pair of curved fingers 24,24, see Fig. 5, which are carried respectively by cylindrical hubs 25,25 journaled between the side plates o f the intermediate section |9 ofthe rotary head 4. The manner in which the arms 24 are connected totheir respective hubs is best illustrated in Fig. 6. As thereinillustrated, the fingers are journaled upon pins 24a, and each hasattached to the outer face thereof a stud 24b which passes through anaperture in a hub extension 24e and carries at its outer end nuts 24dwhich limit the movement of the linger 24 with respect to the hub. Aspring 24e is mounted on the stud 24b and is conilned between the innerside of the hub extension 24e and the outer face of the finger 24 andtends to hold the nger in an advanced position with respectto the saidhub extension. Intermediate the hubs 25 is a curved shoe 25 supported atthe outer end of a stud 21 vslidably sup- DOrted in a bracket 28 securedto the inner facel and extending axially of the latter through the headsection 2|, see Fig. 2. To the fixed structure of the machine is mounteda cam 31 having a groove 33 which receives a roller 39 carried onV theouter end of an arm 4| secured to the shaft 35, the shape of the saidgroove 33'being shown in dotted lines in Fig. 5. As the partiallywrapped roll carried by the conveyer 2. approaches the synchronouslymoving head 4 and as shown in Fig. 5, it is brought into positionbetween the arms 24, 24, which as shown at the lower left oi' Fig. 5 areat this point in an extended position. As the movement progresses, theroll is brought into contact with the shoe 25, and the arms 24, 24 arebrought together by the action of the cam 31 so as to substantiallyembrace the roll, and with the spring-pressed shoe 25 to firmly hold theroll in the intermediate section I9 of the head 4 between the adjacentsections 2| and 22 and in alignment with the forming heads 23, 23.

It will be noted by reference to Fig. 2 that the conveyer 2 comprisestransversely spaced rollsupporting arms 42, 42, between which the arms24, 24 oi' the roll-gripping devices of the rotary fhead may close uponthe roll. When the roll has progressed on the rotary head 4 to theposition D, Fig. 5, the cam 31 acts to again spread and retract the arms24, 24 from the sides of the roll, thereby permitting the latter to fallaway from the head into the chute 1.

'I'he forming heads 23 of the rotary head 4 constitute the means forfolding the projecting ends of the wrapper 3 inthe manner previouslydescribed and illustrated in Figs. 27a and 28a. The mechanism of theforming heads is illustrated in Figs. 1 to 13, inclusive. As thereinillustrated, each head comprises a cylindrical casing 43, the open endof which adjoins the intermediate section I9 of the rotary head, whilethe outer end is closed by an end plate 44. Mounted within the head forboth axial and rotational movementl is a cylindrical sleeve 45, thenormal position of which within the head is shown in Fig. '1 and whichis adapted to be advanced or 'projected through theopen end of thecasing43 by means hereinafter set forth to aposition as shown in Fig. 8, inwhich a shoulder 45 on the sleeve engages a stop flange 41 at the openend of the casing 43. The sleeve 45 has in the interior thereof a seriesof axial guideways or slots 48 in which .are slidably mounted acorresponding ytension 53. .The collar 54, see Fig. 10, has trunnionswhich enter. slots in the bifurcations 51, 51 of an arm 55 of abellcrank lever 59, this lever being pivotally mounted at 5| in the section2| or 22 of the rotary head 4 to which the associated forming head isattached. 'Ihe other arm 52 of the bell crank lever 59 -is looselyclamped in a block 63 mounted for sliding movement. in guides 54 in theassociated rotary head section 2| or 22, as the case may be, and theblock 53 carries a cam roller 55 which enters a cam groove 56 in the cam31, or in the case of those of the bell crank-levers associated with thesection 22 of the rotary head 4 in acam groove 51 of a corresponding cam69 secured to the xed framework of 'the machine, as shown in Fig. 2.Through the medium of the cam groove, 55 or 51 as the case may be,` thebell crank lever is actuated to operate the member 52 between thepositions in which this member is shown in Figs. 7 and 8, therebycorrespondingly moving the racks 49.

Slidably mounted in the interior of the member 52 is a member 59 havinga projecting flange 1| to which are secured in circumferentially spacedrelation a series of brackets 12. The brackets 12, correspond in numberto the racks 49 and are located adjacent to` the respective racks. Each.bracket carries a segmental pinion 13 which meshes with the associatedrack 49 and which meshes also with a second segmental pinion 14journaled on the bracket 12. As shown in Figs. 11, 12 and 13, each ofthe pinions 14 has extension "is to'whioi'i is pivotaily attached .at1.67V asegmental shoe 1,1. The pinion 14"is ion'H. It will be apparentthat astlie rack 49 is `advancedtoward theppen end of ythe casing 43,``the pinion 13 will act to iotatefthepinlOD 14,`,`as ,indicated by the,arrows in` Fig. '12. to

des

the moments. springs:

thereby the segmentaflshoe 'l'lfthrough the 1 position fshwn in brokenlines ,inFi8.12 to a radial position with respect to the axis'fof theforming head Q'I8,"as shownjinFigsg .'9.

It will farniente noted' by' reference to rig'. 9 that `the-segrnentalshoes 1:1 lare soformed and relatively e positioned lthat,t'vlieny in. ,the V a .foresaid radial position, the; edgesoffthe..fadjoiniiig shoes are spaced slightly froml-'e'ach yother K,toprovide therebetween narrowradial .,spaces, the 4,function of whichwillbe hereinafterset forth.

v ith reference again'to Egg?, be v'noted that .the l outer end cf `themember 69, .is cquntersunk and irrternally.,tl'ireadedfor receptionofthe externallx-threadednd vom@ oiiaslsve 8i. the inner Vreduced end`,o :igvy ch iltsslidablyin the. bore of 4the reduced xtension j'iffo'ffthe membewz. This sleeve@ i a spring 82 which iswconiinedbetween theIinferir-,- ber 52 and the ythreaded end portion of the sleeve$|,whch.as previouslyset forth' the. .members 52. and; 691 .inthe rebotein whichthey areshowain Fia?- 'Wheat-there# iore, the .member ,52,isvadvancedjfrom the. .fretracted position shown in 7 through the me-g jdumof ,the bell crank-lever ."19.n and as Ypreviously described; the,springl v.82 .wilijactfupon the inember. 69 tocause a correspondingadvance move-.- ment of the-latter. Since the` brackets i12 secured 'tothe. member 6,9 bearv atwtheir -forv'lall ends upon a. flange 83 secured`tol-the .outer end `oi' tliesleevel,i this advance movement of,A themember Y69 will alsofeifect a corresponding acl-.-v

`. vance movement of the sleeve 45.-.This unitary movement of vthe partscontinuesl until V,the shoul-f der 46 engages the stop ange.41ofthecasing 43, whereupon forward movement, of sleeve 45 isarrestados also will be the. forward move ment of thejmember 69. Thecontinued forward movement of .the member ilpermitted by compressionofthe spring 8.2:'now results iny an ad-lI vancemovement of the racksvliwith respect to the member 69 andy al consequent actuation of thepinions 13 and 14, resulting in adjustment of the segmental shoes "Ilfrom their lnormalmetracted positions, as shownv inyFig. 11,V to theextended "orradial positions vshown iny Figs. 8 a.nd9.` #i f,

In the operation, insofar as described.` of this portion of the vn'i'echanism upon the partially wrapped package, the forming head in itsrela--y tion to the package before the start of the opere.

. ation is shown in Figa?. Asfpreviously described.

theentire mechanism of the forming head'is advanced in theinitialmovementto the position illustrated-in Fig. iii' in vwiiiciii-theprojecting endsof' the wrappers 3 are embraced by the retractedAsegmentalshoes the continued operation, the shoes are then extendedtoward theirradi'al positions, the initial movement of the shoes "inthisdirection 4being illustrated in Fig. 12, it beingv noted that theIcuter end or heel of the"shoe is caused to resilientlyengage the edgevof the roll proper by the spring 18,

while the shoe is'swung downwardly'through the position shown inldotted, lines'` toward the radial fully extended-position. shown inFig. 9. Fig. 8 showstheshoesin the fully extended positions in whichthey bear against the end surface of the roll, the wrapper thereby beingformed with the projecting tucks, as shown inFig. 27a, the tucks beingformed by the paper projecting through the radial spaces between theedges of theadjoining 'In order to` laythe tucks 5 against the end faceo ftheroll. `as shown in Fig.`"28a, it is now necessary;asindicatedintii view of Fig. 8, to

rotatetne shoe assembly with resp-ect to therou. This 'is accomplishedby cani mechanismk illusitratd"in Figs. 7,8 and 10.` AS therein' illus@trated, 'the-*member 45 has attached thereto at 25,

a pointadjacentits inner end ari-inwardly projecting 'arcuateplatefstThis plate has bosses apertured for" reception of rods 86 which pro'-ject 'intof the* interiorof the 'casing 43 from an annulardisk v811slidably held and guided for rol y tationalmovement" in a recess intheinner face oeffthe endl plate 44.' `The end'plate; see Fig. '4, isprovided withfa "concentric slot 44a through whichconnection isIestablished between the disk 81 and one *end ofT an'arm- 88,-the otherend of e.

secured at 89 to one end of V.

`Mito thefixed structure of the machine.

tucks 5 in a' position fiat' against the ends of the roll, as y'showninFig. 28a. i

order to insure retention oftiie'flat tacks thelabels 6, eachof theforming heads isfpro'g vided with aplunger which extends "through theend plate 44 and is guided in a bushing 96 setin the sleeve 8|. A spring81 *tends to hold the plunger in a retracted position, as shown` inFig.v '1, which Aposition is ddetermined by a rcollar 98 onl'the'plungerstem which engagasthe 'end plate 44 as shown. The plunger is advanced asthe-'head rotates by a cam 99, see Figs. 1, 2;,a'nd 27 to 29, 28aand-29a. supported on the fixed struc; tureof the machineI in the pathof thefouter end .of` the plunger,` theoperation being timed withrelation to the action of the forming head so that the inner end of theplunger engages the tucks at theA end ofthe roll immediately after -thelatter have been laid nat, as previously despring 91. It will befnotedby'reference tojlg. Y

29 that the plungers 95' remain in the advanced 50 orfolds in positionpreparatory to'. application of

